Why is there a strong gasoline smell after starting the car?
2 Answers
The reasons for a strong gasoline smell after starting the car are: 1. Insufficient air intake in the car's throttle, leading to incorrect air flow information and affecting the fuel injection volume; 2. Excessive carbon deposits in the cylinder combustion chamber and pistons, resulting in insufficient cylinder pressure and overly rich air-fuel mixture; 3. Excessive carbon deposits inside the engine, causing poor atomization of the air-fuel mixture; 4. Leakage in the gasoline pipe, forming sludge at the pipe connections, with the odor entering the car through the air conditioning system. In older cars, rubber pipes in the engine compartment are prone to aging, leading to leaks. If you notice a strong gasoline smell when starting the car and the smell persists, you should check the condition of the fuel pipes.
I've seen many cases where there's a strong gasoline smell after starting the car, which likely indicates a leakage issue. For example, aging or cracked fuel lines or a damaged fuel tank can cause direct gasoline dripping; when fuel injector seals are not tight, oil can seep and evaporate, releasing odors. If the charcoal canister in the evaporative emission system is clogged or damaged, it can't absorb gasoline vapors, allowing the smell to spread. During cold starts, incomplete engine combustion and overly rich fuel mixtures can cause unburned gasoline smells from the exhaust pipe. Stop the car immediately and check for oil stains under the car and in the engine compartment—don't delay, as this could lead to a fire. Regular maintenance and inspection of fuel system components are recommended—prevention is key, and safety comes first.
